added test case for fulltext join bug

mysql-test/t/fulltext_join.test

+DROP TABLE IF EXISTS stories;
+CREATE TABLE stories (
+	sid char(16) NOT NULL,
+	tid smallint UNSIGNED NOT NULL,
+	uid mediumint UNSIGNED NOT NULL,
+	title varchar(100) DEFAULT '' NOT NULL,
+	dept varchar(100),
+	time datetime DEFAULT '0000-00-00 00:00:00' NOT NULL,
+	hits mediumint UNSIGNED DEFAULT '0' NOT NULL,
+	section varchar(30) DEFAULT '' NOT NULL,
+	displaystatus tinyint DEFAULT '0' NOT NULL,
+	commentstatus tinyint,
+	discussion mediumint UNSIGNED,
+	submitter mediumint UNSIGNED NOT NULL,
+	flags set("delete_me","data_dirty") DEFAULT '' NOT NULL,
+	PRIMARY KEY (sid),
+	FOREIGN KEY (uid) REFERENCES users(uid),
+	FOREIGN KEY (tid) REFERENCES tid(topic),
+	FOREIGN KEY (section) REFERENCES sections(section),
+	KEY time (time),
+	KEY searchform (displaystatus,time)
+) TYPE = myisam;
+DROP TABLE IF EXISTS story_text;
+CREATE TABLE story_text (
+	sid char(16) NOT NULL,
+	introtext text,
+	bodytext text,
+	relatedtext text,
+	FOREIGN KEY (sid) REFERENCES stories(sid),
+	PRIMARY KEY (sid)
+) TYPE = myisam;
+ALTER TABLE stories add fulltext (title);
+ALTER TABLE story_text add fulltext (introtext,bodytext);
+
+SELECT stories.sid,title, TRUNCATE((MATCH (title,introtext,bodytext)
+AGAINST('install')), 1) as score  FROM stories,story_text WHERE
+stories.sid = story_text.sid AND MATCH (title,introtext,bodytext)
+AGAINST ('install');